Actuating device for printing-press throw-off mechanism



C. A. SODERLUND. ACTUATING- DEVICE FOR PRINTING PRESS THROW-OFFMECHANISM.

APPLICATION FILED OCT- 29. I911.

Patented Nov. 7, 1922.

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AGTUATING DEVICE FOR PRINTING PRESS THROW-OFF MECHANISM.

' APPLHEATION FILED OCT- 29, 1917.

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CARL A. SODERLUND, OF BROOKLYN, NEW YORK.

ACTUATING DEVICE FOR PRINTING-PRESS THROW-OFF MECHANISM.

I Application filed October 29, 1917. Serial No. 198,938.

To all whom it may concern:

Be it known that I, CARL A. SonnnLUNo, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented new and useful Improvements in 'Actuating Device forPrinting-Press Throw-Off Mechanism, of

which the following is a specification.

This invention relates-to printing presses and more particularly to thetype ofpress employing automatic sheet feeders and has for one of itsprincipal objects, the provision of an actuating device for'thethrow-off mechanism of the same, which will promptly act to retain thecylinder in a lifted position away from the bed of the press and shutofffurther operation of the same upon the inaccurate side register'of thesheet when fed thereagainst.

Another object of the invention is the provision of a device of thecharacter described which is adapted to be attached to the ordinary sideguides of a press and which is provided with a slotted portion having agravitational latch which normally obstructs the downward movement of avertically swinging lever, the gravitational latch being adapted to beactuated bya sheet fed thereagainst, whereby upon proper feeding of thesheet thereagainst, the throwoff mechanism is inactive but upon failureof the sheet to be fed thereagainst, the press will be automaticallythrown out of action.

A further object of the invention is the provision of a device of thecharacter described, which is providedwith an attaching plate having abase adjus'tably mounted thereon whereby an accurate register of thesheet may be readily had upon adjustment of the base with relation tothe. attaching plate.

A still further object of the invention is the provision of a device ofthe character described which is provided with a standard rising fromthe base, said standard being provided with recessed portions adjacentthe slotted portion thereof, whereby the gravitational latch mountedtherein, may be positively retracted within said slotted portion thuseliminating any possibility of the latch obstructing the downwardmovement of the vertically swinging lever.

Another object of the invention is the provision of a device of theclass described which is of simple construction, inexpensive tomanufacture, thoroughly reliable and efiicient in its operation, andwhich may be readily adapted to any press of the class described whichis provided with a throw off mechanism.

With these and other objects in view, the invention resides in the novelconstruction, combination and arrangement of parts fully described andpointed out in the claims and illustrated in the accompanying drawings,in which: r

Figure 1 is a perspective of the device showing the same in positionupon the press.

Figure 2 is a diagrammatic view illustrating a portion of the throw-offmechanism with which the device is associated.

Figure 3 is a perspective showing the arrangement of my devicerelatively to adjacent portions of a press and also showing by dottedlines a sheet of paper.

Figure 4; is a vertical section through the device on the line 414 ofFigure 5.

Figuref) is a front elevation of the improved device.

Figure 6 is a horizontal sectional view on the line 66 of Figure 4.

Figure 7 is a fragmentary section of one of the details of theinvention, and

Figure 8 is a similar view.

In order to' more clearly point out the operation of my device, I haveshown diagrammatically in the drawings, certain essential portions ofthe throw-off mechanism now in use which is substantially illustrated inthe patent to Cross No. 799,457. This mechanism includes a hollow rockshaft (A), surrounding a shaft (13). The shaft (B) has secured to oneextremity a lever (D), provided with a ratchet head (E), adapted toco-operate with a pawl (F) which is pivotally mounted on a lever Thislever (F) is designed to be rocked through a rod (F from an appropriatepart of the press. A. rod (13) is connected with the lever '(D) and is'also connected with appropriate means forcontrolling the lifting of thecylinder, the said means including the rod (1), Figure 2, associatedwith an arc-uate bar (H) connected to the rods (1)) and (I), andprovided with a roller (J) which contacts with the switch K throwing thesame out of engagement with the contact L, thus throwing off furtheroperation of the press. A link F connects the lever F with an arm Fwhich is further connected by a link F to a piv ote darm F which isprovided with a roller adapted to contact'with the cam}? mounted on 'amoving part of the machine for transmitting the necessary rocking motionto the lever F The pawl F is provided with a suitable pin or lug F whichis adapted to normally engage with a slot G in the arm G which is formedon a sleeve G secured to the hollow shaft A. A coiled spring G isadapted to the arm G and operates to tension the arm G in order toretain the in F in active engagement with the slot 6.

My device comprises means for arresting the rocking motion of the shaft(A) upon failure of a sheet being fedsidewise against the device andconsists of an attaching plate 10 which is secured to the side guideadjacent to th'e rocking shaft (A) by means of screws 11. Adjustablyassociated with the attaching plate 10, by means of set screws 12, andslots 13, as a base member 1a, which is provided with a standard 15,rising therefrom, the same being slotted as at 16,

and having its outer face recessed as at 17, Figures 3 and 5. Pivotedwithin the slotted portion 16, for swinging movement, is an L shapedgravitational latch 18, having a Weighted ortion 19, Which serves tonor- 7 mally pr0 ect the upper extremity of the latch beyond the outerface of the standard 15, for a purpose to be hereinafter described.Pivoted to the outer face of'the standard at one side of and immediatelyabove the slot 16, is a swinging lever 20, which is normally projectedupwardly againstastop pin 21, by means of a coiled spring 22. The rockshaft (A) has secured thereto adjacent the lever 20 an arm 28, Figure 1,which normally contacts with the lever 20, upon operation of the pressand depresses the same against the action of the spring 22, when a sheetis accurately fed against the latch member.

In operation of the device, should the gripper member (C) fail to feed asheet against the latch 18 it will remain in the path of the lever 20and prevent the normal downward movement thereof, thus forming a rigidstop against which the arm 23 will contact thereby arresting the rockingmotion of the rock shaft (A) to which the arm 23 is connected. This willresult in the operation of the throw-off mechanism as heretoforedescribed with the corresponding result.

It will be noted that the recess 17, in the front face of the standardallows the sheet to depress or retract the latch 18 beyond the frontsurface of the standard, thereby eliminating any possibility ofthe sameobstructing the downward .movement of the arm when the paper is properlyfed against the device.

While I have illustrated and described a simple and preferred form ofcarrying my invention into practice, I wish to have it understood that Ido not care to be limited to the exact details of construction thereinshown but'desire to have it understood that such changes and alterationsand changes as fall'within the scope of the appended claims may beresorted to when desired.

What isclaimed as new is 1. An actuatingdev-ice for a throw-off forprinting presses comprising movable means, stop mechanism having meansto contact with said movable means, and movable means to holdsaidfirst-named movable means against movement and operable by the sheetwhen said sheet is fed against said second-named movable means torelease said first-named movable means and permit it to move.

2. In an actuating device for the throw-off mechanism of printingpresses, the combination with a rock shaft and an arm secured to therock shaft, of means for obstructing the movement of the same includinga base having a vertical slotted standard, a lever pivoted thereto, anda pivoted latch member arranged in said slotted portion to normallyobstruct the downward movement of the lever and adapted to be retractedunder the action of the sheets when properly fed thereagainst to allowfree movement of the lever, said standard operably disposing the latchmember for sidewise contact of the sheet therewith. Q i

3. An actuating device for the throw-off mechanism of printing ressescomprising, a base,a vertical slotted standard rising therefrom, anL-shaped gravity latch pivoted in the slotted portion of the standardand normally projecting partially therethrough, a lever pivoted to saidstandard above the slotted portion and adapted to contact with the upperextremity of the latch member, a rock shaft of the throw-off mechanismhaving an arm co-acting with-the lever, to arrest the movement of therock shaft upon failure of a sheet to be'fed against said latch, wherebyto operate the throw-off mechanism. I

4. An actuating device for the throw-off mechanism of printing presses,comprising a rock shaft, an arm attached to said rock shaft, a basemember attached to astationary portion of the press having a verticalslotted standard rising therefrom, a' lever pivoted thereto andco-acting with the first mentioned arm, a latch member pivoted withinthe slotted portion of the standard for obstructing the downwardmovement of the lever upon failure of a sheet to be properly fed againstthe latch, whereby to arrest the movement of the rock shaft to cause theoperation of the-throw-ofi': mechanism, the said slotted standardserving to dispose the latch member for sidewiseoontact with'the sheet.

An actuating device for a throw-off for printing presses comprising astandard, a

swinging lever pivoted to said standard, stop mechanism having anelement normally in contact with said swinging lever, and movable meansfor normally holding said swinging lever against movement and operableby the sheet when said sheet is fed against said movable means, torelease said swinging lever and permit it to move from normal position,substantially as and for the purpose described.

6. An actuating device for the throw-off mechanism of printing presses,comprising the combination with the rock shaft of a throw-0E mechanismof a base, a vertical standard rising therefrom having a slottedportion, a lever pivoted to said standard above the slotted portionthereof, a latch member pivoted Within said slotted portion and normallyobstructing the downward movement of said lever, an arm secured to saidrock shaft of the throw-01f mechanism which co-acts with the lever toarrest the motion of the rock shaft, said standard operably disposingthe latch member for sidewise contact of the sheet therewith.

In testimony whereof I affix my signature.

CARL A. SODERLUN D.

